Visual-gate-#4 evidence revealed the prior commit's cull-restore-at-exit
addition was wrong. The Landblock→None CullMode override worked correctly
for cell-mesh polys, but the cull-back state I restored at Render exit
propagated to the subsequent `dispatcher.Draw(IndoorPass)` call. The
dispatcher's IndoorPass renders AC's cottage shell — landblock-baked
GfxObj parts (wooden floor planks, wall slabs) whose pos-side winding +
our FrontFace=CCW + cull-back = floor poly is back-facing and culled.
User saw light blue sky through the floor in gate-#4.
Reverting the cull-restore lets cull-disabled propagate from
EnvCellRenderer.Render through IndoorPass. Cottage shell renders
double-sided so the floor + wall slabs are visible from any angle.
Step 4's gl.Enable(EnableCap.CullFace) at the terrain pass (line
~10768) + the cleanup block's enable (line ~10870) re-establish
cull-back BEFORE the LiveDynamic dispatcher.Draw fires — so chars,
NPCs, doors still render solid (no see-through-head regression from
gate-#3's ACDREAM_A8_DISABLE_CULL=1 diagnostic).
The retail-faithful long-term fix is matching WB's `glFrontFace(GLEnum.CW)`
globally (per GameScene.cs:843) so cull-back selects the correct side
for AC's natural polygon winding without needing double-sided rendering.
That requires a wider audit of every consumer's FrontFace assumption
(translucent crystal renderer + others) and is deferred.
14/14 EnvCellRenderer tests pass. Build green.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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